JP2003105876A - Structural body of waterproof concrete - Google Patents
Structural body of waterproof concreteInfo
- Publication number
- JP2003105876A JP2003105876A JP2001299592A JP2001299592A JP2003105876A JP 2003105876 A JP2003105876 A JP 2003105876A JP 2001299592 A JP2001299592 A JP 2001299592A JP 2001299592 A JP2001299592 A JP 2001299592A JP 2003105876 A JP2003105876 A JP 2003105876A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing member
- concrete
- reinforcing
- reinforcing bar
- waterproof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Building Environments (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はコンクリート構造体
に係わり、特にそれ自体で優れた防水性能を有する防水
コンクリート構造体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete structure, and more particularly to a waterproof concrete structure having excellent waterproof performance by itself.
【０００２】[0002]
【従来の技術】周知のように、コンクリート造の躯体は
多少なりともひび割れが発生することが不可避であるた
め、それ自体では十分な防水性能が確保できないことが
通常であり、したがって高度の防水性能が要求される場
合にはさらに防水工事を行う必要がある。2. Description of the Related Art As is well known, since it is unavoidable that a concrete frame is cracked to some extent, it is usually impossible to ensure sufficient waterproof performance by itself, and therefore a high waterproof performance is required. If required, it is necessary to carry out further waterproofing work.
【０００３】[0003]
【発明が解決しようとする課題】しかし、防水工事はか
なりのコストと面倒な手間を要する工事であるので、防
水工事を省略ないし軽減できれば施工性を大きく改善す
ることができ、それを実現し得る有効適切な工法の開発
が望まれていた。However, since waterproofing is a costly and troublesome work, if the waterproofing work can be omitted or reduced, the workability can be greatly improved and can be realized. The development of effective and appropriate construction methods was desired.
【０００４】なお、鉄筋コンクリート造の躯体において
は、鉄筋を構造上必要とされる以上に密に配筋すればひ
び割れ発生を抑制することはできるが、それ自体で防水
性能を確保できる程度にひび割れの発生を防止するため
には所要鉄筋量が著しく増大してしまい、通常の施工で
は現実的ではない。In the reinforced concrete frame, cracking can be suppressed by arranging the reinforcing bars more densely than necessary for the structure, but the cracking is sufficient to ensure the waterproof performance by itself. In order to prevent the occurrence, the amount of rebar required increases significantly, which is not practical in normal construction.
【０００５】上記事情に鑑み、本発明はシート防水等の
防水工事を省略可能であり、また鉄筋がある場合でも鉄
筋量を増大させることもなく、コンクリート構造体それ
自体で防水性能を確保することが可能となる防水コンク
リート構造体を提供することを目的とする。In view of the above circumstances, according to the present invention, waterproofing work such as sheet waterproofing can be omitted, and even if there is a reinforcing bar, the concrete structure itself does not increase the amount of the reinforcing bar and ensures the waterproofing performance. It is an object of the present invention to provide a waterproof concrete structure capable of
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、構造
物の壁体や床版、屋根版等の略平版状の躯体を構成する
コンクリート内に、高強度繊維を樹脂により固着して格
子状に一体成形してなる補強部材を埋設したことを特徴
とする。According to the invention of claim 1, high-strength fibers are fixed by a resin in concrete which constitutes a substantially planographic body such as a wall of a structure or a floor slab and a roof slab. It is characterized in that a reinforcing member integrally formed in a lattice shape is embedded.
【０００７】請求項２の発明は、請求項１の発明におい
て、鉄筋コンクリート造の躯体内に配筋される鉄筋の少
なくとも片面側に、その鉄筋に添わせて補強部材を配設
したことを特徴とする。According to a second aspect of the present invention, in the first aspect of the invention, a reinforcing member is arranged on at least one side of the reinforcing bar arranged inside the reinforced concrete structure so as to be along the reinforcing bar. To do.
【０００８】請求項３の発明は、請求項１の発明におい
て、鉄筋コンクリート造の躯体における鉄筋の機能を補
強部材に持たせて、その補強部材を鉄筋に代えて躯体内
に埋設したことを特徴とする。According to a third aspect of the present invention, in the first aspect of the invention, the reinforcing member has the function of the reinforcing bar in the reinforced concrete frame body, and the reinforcing member is replaced with the reinforcing bar and is embedded in the frame body. To do.
【０００９】請求項４の発明は、高強度繊維を樹脂によ
り固着して格子状に一体成形してなる補強部材をコンク
リート内に埋設して既設構造物上にコンクリート打設し
たことを特徴とする。The invention according to claim 4 is characterized in that a reinforcing member formed by integrally molding a high-strength fiber with a resin and forming it in a lattice shape is embedded in concrete and concrete-cast on an existing structure. .
【００１０】[0010]
【発明の実施の形態】図１は本発明において使用する補
強部材の一例を示すものである。この補強部材１は、高
強度補強繊維を樹脂により固着して格子状に一体成形し
てなるもので、通常の鉄筋を格子状に組んだメッシュ筋
や溶接金網に比べて遙かに軽量でありながら同等以上の
引張強度を有し、しかも全く腐食することがなく優れた
耐久性を有するものである。FIG. 1 shows an example of a reinforcing member used in the present invention. The reinforcing member 1 is made by integrally fixing high-strength reinforcing fibers with resin and is integrally molded in a lattice shape, and is much lighter in weight than a mesh reinforcing rod or a welded wire net in which ordinary reinforcing bars are assembled in a lattice shape. However, it has a tensile strength equal to or higher than that, and has excellent durability without being corroded at all.
【００１１】この補強部材１の素材である高強度補強繊
維としては、たとえばカーボン繊維、ガラス繊維、アラ
ミド繊維、ポリアリレート繊維、ビニロン繊維、ポリエ
チレン繊維、ポリプロピレン繊維、チラノ繊維、がある
が、その中でもカーボン繊維、ガラス繊維、アラミド繊
維が好適に採用可能であり、それらを任意に組み合わせ
て使用しても良い。樹脂としては、たとえば、ビニルエ
ステル樹脂、アクリル樹脂、エポキシ樹脂、フェノール
樹脂、不飽和ポリエステル樹脂、ポリエチレン樹脂、ポ
リプロピレン樹脂があり、その中でもビニルエステル樹
脂が好適に採用可能である。Examples of the high-strength reinforcing fiber as the material of the reinforcing member 1 include carbon fiber, glass fiber, aramid fiber, polyarylate fiber, vinylon fiber, polyethylene fiber, polypropylene fiber, and tyranno fiber. Carbon fiber, glass fiber, and aramid fiber can be preferably used, and any of them may be used in combination. Examples of the resin include vinyl ester resin, acrylic resin, epoxy resin, phenol resin, unsaturated polyester resin, polyethylene resin and polypropylene resin, and of these, vinyl ester resin can be preferably used.
【００１２】この補強部材１は、樹脂を含浸させた連続
長繊維を多層に積層することで縦材１ａと横材１ｂとを
形成していき、（ｂ）に示すように交差部においては縦
材１ａと横材１ｂとを交互に積層することで、全ての縦
材１ａと横材１ｂとを同一平面内において完全一体化さ
せた状態に形成できるものであり、十分な交点強度を持
つものである。In this reinforcing member 1, continuous long fibers impregnated with resin are laminated in multiple layers to form a vertical member 1a and a horizontal member 1b. As shown in FIG. By alternately laminating the horizontal members 1a and the horizontal members 1b, all the vertical members 1a and the horizontal members 1b can be formed in a completely integrated state in the same plane, and have sufficient intersection strength. Is.
【００１３】図２は、本発明の防水コンクリート構造体
を地下道等の地中構造物の壁体１０に適用した場合の実
施形態を示すものである。この壁体１０は鉄筋１１をコ
ンクリート１２中に埋設した鉄筋コンクリート造のもの
であるが、鉄筋１１に添わせてその内面（地下水を有す
る地盤等に接する面すなわち水に接する面を外面とし、
その反対側を内面とする）側に上記の補強部材１を配設
して鉄筋１１に対して結束し、そのままコンクリート１
２を打設することで、表層部（鉄筋１１とコンクリート
１２の表面との間のかぶりに相当する部分）に補強部材
１が埋設された状態で形成されたものとなっている。FIG. 2 shows an embodiment in which the waterproof concrete structure of the present invention is applied to a wall body 10 of an underground structure such as an underground passage. This wall body 10 is made of reinforced concrete in which a reinforcing bar 11 is embedded in a concrete 12, and the inner surface (the surface contacting the ground or the like having groundwater, that is, the surface contacting water) is attached to the reinforcing bar 11 as an outer surface,
The reinforcing member 1 is arranged on the side opposite to the inner surface) and is bound to the reinforcing bar 11 and the concrete 1
2 is cast, so that the reinforcing member 1 is embedded in the surface layer portion (a portion corresponding to the covering between the reinforcing bar 11 and the surface of the concrete 12).
【００１４】本実施形態における補強部材１としては、
たとえばカーボン繊維をビニルエステル樹脂にて固着し
たものが好適であり、その寸法はたとえば縦材１ａおよ
び横材１ｂの個々の断面積は約６.６ｍｍ2（幅φ約５ｍ
ｍ×厚さｔ約１.３２ｍｍ）、格子間隔Ｃｓは５０ｍｍ
×５０ｍｍとされ、その補強部材１が壁体１０の表面か
らたとえば１００ｍｍの位置（つまり補強部材１のかぶ
りＣ＝１００ｍｍ）に埋設されている。As the reinforcing member 1 in this embodiment,
For example, carbon fibers fixed with a vinyl ester resin are preferable, and the dimension thereof is, for example, each cross-sectional area of the vertical member 1a and the horizontal member 1b is about 6.6 mm 2 (width φ about 5 m.
m × thickness t about 1.32 mm), lattice spacing Cs is 50 mm
The reinforcing member 1 is embedded at a position of, for example, 100 mm from the surface of the wall body 10 (that is, the cover C of the reinforcing member 1 = 100 mm).
【００１５】本実施形態では、上記のような補強部材１
を壁体１０の表層部に埋設したことにより、その補強部
材１によってひび割れの発生が有効に防止され、したが
って防水性能が自ずと十分に高められたものとなってい
て、従来においては必要とされていた防水工事を省略す
ることが可能となっている。In this embodiment, the reinforcing member 1 as described above is used.
Since the reinforcing member 1 is embedded in the surface layer of the wall body 10, the occurrence of cracks is effectively prevented, and therefore the waterproof performance is naturally sufficiently enhanced, which has been conventionally required. It is possible to omit waterproofing work.
【００１６】具体的な数値例を挙げて説明すると、上記
の壁体１０に生じるひび割れの幅は、コンクリート標準
示方書に規定されている算定式に準じて、次式により算
定することができる。
Ｗ＝Ｋ｛４Ｃ＋０.７（Ｃｓ−φ）｝＊σ／Ｅ
Ｗ：発生ひび割れ幅（ｍｍ）
Ｋ：係数
Ｃ：補強部材からのかぶり（ｍｍ）
Ｃｓ：補強部材の格子間隔（ｍｍ）
φ：補強部材の縦材および横材の幅（ｍｍ）
σ：補強部材の増加応力度（Ｎ／ｍｍ2）
Ｅ：補強部材のヤング係数（Ｎ／ｍｍ2）Explaining with a specific numerical example, the width of the cracks generated in the wall body 10 can be calculated by the following equation in accordance with the equation specified in the standard specification for concrete. W = K {4C + 0.7 (Cs-φ)} * σ / E W: Crack width generated (mm) K: Coefficient C: Fogging from reinforcing member (mm) Cs: Lattice spacing of reinforcing member (mm) φ: Width of vertical member and horizontal member of reinforcing member (mm) σ: Increased stress level of reinforcing member (N / mm 2 ) E: Young's modulus of reinforcing member (N / mm 2 )
【００１７】上記で例示した補強部材１を用いる場合、
上式における各値は
Ｋ＝１.２４
Ｃｓ＝５０ｍｍ
φ＝５ｍｍ
σ＝１４０Ｎ／ｍｍ2（本実施形態において算出された
応力度である）
Ｅ＝１.０＊１０5Ｎ／ｍｍ2
であり、それらの値を代入して演算すれば、壁体１０の
表面ではＣ＝１００ｍｍであるから、そこでのひび割れ
幅Ｗは
Ｗ＝１.２４｛４＊１００＋０.７（５０−５）｝＊１４０／１.０＊１０5
＝０.７４９ｍｍ
となる。また、補強部材１の位置ではＣ＝０であるから
そこでのひび割れ幅Ｗは
Ｗ＝１.２４｛４＊０＋０.７（５０−５）｝＊１４０／１.０＊１０5
＝０.０５５ｍｍ
となる。When using the reinforcing member 1 exemplified above,
Each value in the above equation is K = 1.24 Cs = 50 mm φ = 5 mm σ = 140 N / mm 2 (which is the stress level calculated in this embodiment) E = 1.0 * 10 5 N / mm 2 . Then, by substituting these values and calculating, C = 100 mm on the surface of the wall body 10, so the crack width W there is W = 1.24 {4 * 100 + 0.7 (50-5)} * 140 /1.0*10 5 = 0.749 mm. Since C = 0 at the position of the reinforcing member 1, the crack width W there is W = 1.24 {4 * 0 + 0.7 (50-5)} * 140 / 1.0 * 10 5 = 0.055 mm. Becomes
【００１８】つまり、本実施形態の壁体１０は、表面で
は０.８ｍｍ程度のひび割れが生じることが想定される
ものの、内部の補強部材１の位置ではひび割れ幅は０.
１ｍｍ以下でしかない。一般の鉄筋コンクリートではひ
び割れ幅が０.２ｍｍ以下であれば防水性能は十分であ
るといわれており、したがって本実施形態では少なくと
も補強部材１の位置においては十分な防水性能を確保で
きるものであって実質的に貫通ひび割れが生じることが
なく、それ故に防水工事を省略することが可能である
し、鉄筋１１を過度に密に配筋する必要も勿論ない。That is, in the wall body 10 of this embodiment, a crack of about 0.8 mm is expected to occur on the surface, but the crack width is about 0.
It is only 1 mm or less. In general reinforced concrete, if the crack width is 0.2 mm or less, it is said that the waterproof performance is sufficient. Therefore, in the present embodiment, at least at the position of the reinforcing member 1, sufficient waterproof performance can be ensured. Since there is no penetration crack, the waterproofing work can be omitted, and the reinforcing bars 11 need not be arranged too densely.
【００１９】なお、以上の説明で明らかであろうが、本
発明ではひび割れ幅が０.２ｍｍ以下、好ましくは０.１
ｍｍ以下となるように補強部材１の形状、寸法、強度を
決定すればその補強部材１の位置でひび割れをほぼ完全
に防止できるものであり、壁体１０内における補強部材
１の配設位置は特に限定されるものではない。つまり、
上式におけるかぶりＣの値は任意に変更して良い。そし
て、本発明で用いる補強部材１は腐食の恐れがないこと
から鉄筋のように十分なかぶりを確保する必要はなく、
したがって表層部のごく浅い位置すなわちコンクリート
表面近くに埋設することも可能であり、その場合は特に
表層部におけるひび割れを十分に防止できることにな
る。コンクリートの表層近くに好適に施工できる例とし
て、壁においては例えば片方の型枠を先行して組み立て
るような場合には、この型枠に適宜のスペーサーを介し
たり、位置保持具としてセパレータを利用したりしてこ
の先行組立型枠に保持させれば、好適にコンクリート表
面近くに補強材を埋設することができる。ただし、上記
実施形態のように補強部材１を鉄筋１１の内面側に添わ
せて配置すれば鉄筋１１の近傍でのひび割れを有効に防
止できるばかりでなく、補強部材１を鉄筋１１に対して
結束することができるのでその配設作業を最も効率的に
行うことができるので、そのようにすることが現実的で
あるといえる。As will be apparent from the above description, in the present invention, the crack width is 0.2 mm or less, preferably 0.1.
If the shape, size, and strength of the reinforcing member 1 are determined so as to be less than or equal to mm, cracking can be almost completely prevented at the position of the reinforcing member 1. It is not particularly limited. That is,
The value of the fog C in the above equation may be arbitrarily changed. Further, since the reinforcing member 1 used in the present invention has no fear of corrosion, it is not necessary to secure sufficient cover like a reinforcing bar,
Therefore, it is possible to bury it at a very shallow position in the surface layer, that is, near the concrete surface, and in that case, it is possible to sufficiently prevent cracks particularly in the surface layer. As an example that can be suitably installed near the surface layer of concrete, for example, when assembling one mold in advance in a wall, use an appropriate spacer in this mold or use a separator as a position holder. If it is held by this pre-assembled formwork, the reinforcing material can be preferably buried near the concrete surface. However, if the reinforcing member 1 is arranged along the inner surface side of the reinforcing bar 11 as in the above embodiment, not only can cracks in the vicinity of the reinforcing bar 11 be effectively prevented, but the reinforcing member 1 can also be bound to the reinforcing bar 11. Therefore, it can be said that such arrangement is realistic because the arrangement work can be performed most efficiently.
【００２０】また、内面側でのひび割れ防止効果は若干
低下するものの、図３に示すように補強部材１を鉄筋１
１の外面側に設けることも考えられる。その場合には、
万一生じたひび割れにより外部から地下水が壁体１０内
に浸入したとしても、鉄筋１１の外側の補強部材１の位
置で食い止められ、したがって地下水が鉄筋１１の位置
にまで達することが防止されて鉄筋１１の腐食を防止で
きる利点がある。同様の理由から、本発明を地下構造物
の頂版あるいは屋根版に適用する場合には、鉄筋１１の
上面側要するに地下水や雨水等の水に接する面側に補強
部材１を配置することが好ましい。Further, although the effect of preventing cracks on the inner surface side is slightly lowered, as shown in FIG.
It is also conceivable to provide it on the outer surface side of 1. In that case,
Even if groundwater intrudes into the wall body 10 from the outside due to a crack that has occurred, the groundwater is blocked at the position of the reinforcing member 1 outside the reinforcing bar 11, so that the groundwater is prevented from reaching the position of the reinforcing bar 11. There is an advantage that 11 corrosion can be prevented. For the same reason, when the present invention is applied to the top plate or roof plate of an underground structure, it is preferable to arrange the reinforcing member 1 on the upper surface side of the reinforcing bar 11, that is, on the surface side in contact with water such as ground water or rainwater. .
【００２１】なお、必要であれば、たとえば壁体１０に
配設される鉄筋の内面側と外面側の双方に補強部材１を
それぞれ埋設する等、複数の補強部材１を配設すること
も考えられる。また、補強部材１は必ずしも壁体１０全
体に設けることはなく、ひび割れが予想される箇所、あ
るいはひび割れを確実に防止する必要のある箇所にのみ
補強部材１を設けることでも勿論良い。If necessary, a plurality of reinforcing members 1 may be arranged, for example, by embedding the reinforcing members 1 on both the inner surface side and the outer surface side of the reinforcing bars arranged on the wall 10. To be Further, the reinforcing member 1 is not necessarily provided on the entire wall body 10, and it is of course possible to provide the reinforcing member 1 only at a place where cracks are expected or where it is necessary to surely prevent the cracks.
【００２２】図４は、本発明を歩道橋の床版２０に適用
した場合の実施形態を示す。先の実施形態は鉄筋コンク
リート造の壁体１０に対して補強部材１を付加した構造
であるが、本実施形態では上記実施形態におけるものと
同様の補強部材２３に鉄筋の機能を持たせることとし
て、防水工事のみならず鉄筋をも省略するようにしたも
のである。FIG. 4 shows an embodiment in which the present invention is applied to a slab 20 of a footbridge. The previous embodiment has a structure in which the reinforcing member 1 is added to the reinforced concrete wall body 10, but in the present embodiment, the same reinforcing member 23 as that in the above-described embodiment is provided with the function of the reinforcing bar. Not only the waterproof work but also the rebar was omitted.
【００２３】図４において符号２１は底型枠を兼ねる鋼
床版、２２は鋼床版２１上に打設されたコンクリート、
２３はコンクリート２２中に埋設された補強部材（先の
実施形態における補強部材１と同様のもの）、２４は敷
きモルタル、２５はタイルであり、本実施形態では上記
実施形態と同様に補強部材２３にコンクリート２２に対
するひび割れ防止機能を持たせるばかりでなく、その補
強部材２３に構造部材としての鉄筋（床筋）の機能を併
せ持たせるべく、補強部材２３の強度、各部の寸法、形
状が決定されている。In FIG. 4, reference numeral 21 is a steel deck which also serves as a bottom formwork, and 22 is concrete cast on the steel deck 21.
23 is a reinforcing member embedded in concrete 22 (the same as the reinforcing member 1 in the previous embodiment), 24 is a mortar, and 25 is a tile. In the present embodiment, the reinforcing member 23 is the same as in the above embodiment. The strength, size and shape of each part of the reinforcing member 23 are determined so that the reinforcing member 23 also has the function of the reinforcing bar (floor reinforcing bar) as a structural member, in addition to having the function of preventing cracking against the concrete 22. ing.
【００２４】通常のこの種の床版は図５に示すようにコ
ンクリート２２内に鉄筋（溶接金網を含む）２６を配筋
し、かつそれ自体では防水性能を十分に確保できないこ
とから鋼床版２１上に防水シート２７を設ける必要があ
ったが、本実施形態では補強部材２３を設けることでコ
ンクリート２２のひび割れを有効に防止できることから
防水シート２７を省略でき、しかも、その補強部材２３
自体が鉄筋として機能するので従来の鉄筋２６を省略で
きて鉄筋工事の省略ないし軽減も実現でき、その結果、
施工性を大きく改善でき、施工コストを大きく軽減する
ことができるものである。また、従来においては鉄筋２
６のかぶりを確保するためにコンクリート２２中への配
管類の埋設に対して大きな制約があるが、本実施形態で
は補強部材２３の厚さが鉄筋２６に比べて十分に薄いも
のとできるし、補強部材２３に対するかぶりの確保もさ
して必要としないので、コンクリート２２中への配管類
の埋設スペースも拡大することが可能となり、従来より
太径の配管を多数埋設することが可能となる。なお、鋼
床版２１上においてコンクリート２２を打ち継ぐ場合に
おいて、必要であれば打継部に対してのみ防水工事を行
えば良い。A conventional floor slab of this kind has steel rebars (including welded wire mesh) 26 laid in concrete 22 as shown in FIG. 5, and cannot secure sufficient waterproof performance by itself. Although it was necessary to provide the waterproof sheet 27 on the 21, the waterproof sheet 27 can be omitted because the cracking of the concrete 22 can be effectively prevented by providing the reinforcing member 23 in the present embodiment, and the reinforcing member 23 is also provided.
Since it functions as a rebar itself, the conventional rebar 26 can be omitted, and the rebar construction can be omitted or reduced. As a result,
The workability can be greatly improved and the construction cost can be greatly reduced. Further, in the conventional case, the reinforcing bar 2
Although there is a large restriction on the embedding of the pipes in the concrete 22 in order to secure the covering of No. 6, the thickness of the reinforcing member 23 can be made sufficiently thinner than the reinforcing bar 26 in the present embodiment, Since it is not necessary to secure a cover for the reinforcing member 23, the space for burying the pipes in the concrete 22 can be expanded, and a large number of pipes having a diameter larger than the conventional one can be buried. When concrete 22 is spliced on the steel deck 21, waterproofing work may be performed only on the spliced portion, if necessary.
【００２５】本発明の更に別の実施形態として、コンク
リート造等の既設構造物の躯体の頂版に躯体とは別途に
施工される保護コンクリート（モルタルを含む）中に前
記実施形態の補強部材を埋設して防水コンクリート構造
物とすることである。これは例えば、地上の構造物の屋
根等で水に接する面にシート防水が敷設された上に保護
コンクリートが施工されているような場合の防水工の改
修において、シート防水をせずに防水と保護を兼ねて施
工することである。この場合の補強部材の埋設深さは特
に限定されない。さらに、この構造は地中構造物あるい
は水槽等の場合で、水に接する面に構造物躯体とは別途
に施工される保護コンクリートを兼ねた防水コンクリー
ト構造物にも適用できるし、改修に限らず新設でも良
い。この構造によれば、シート防水に比べて工程の省略
による工期短縮になる。As still another embodiment of the present invention, the reinforcing member of the above embodiment is provided in a protective concrete (including mortar) which is constructed separately from the skeleton on the top plate of the skeleton of an existing structure such as concrete construction. It is to embed it into a waterproof concrete structure. This is, for example, in the renovation of waterproofing work when protective concrete is applied on the surface of the structure that is in contact with water such as the roof of a structure on the ground. It is to be constructed for protection as well. The embedding depth of the reinforcing member in this case is not particularly limited. Furthermore, this structure can be applied to underground concrete structures or water tanks, etc., and it can be applied to waterproof concrete structures that also serve as protective concrete that is constructed separately from the structure skeleton on the surface in contact with water, and is not limited to repairs. It may be a new installation. According to this structure, the construction period can be shortened by omitting the steps as compared with the waterproof sheet.
【００２６】なお、本発明を壁体１０に適用した先の実
施形態においても、補強部材１に鉄筋の機能を持たせる
ことで、換言すれば鉄筋１１の機能を併せ持つような補
強部材１を採用することで、本来の鉄筋１１を省略する
ことも可能であることはいうまでもない。それから、本
実施形態において、壁や床版等での補強材として格子間
隔５０ｍｍのものを使用したが、特にこの格子間隔に限
定される訳ではない。しかし、ひび割れを拘束する点を
考慮すれば格子間隔は小さい方が良い。一体成型品の補
強材として、２５ｍｍから５０ｍｍ程度の格子間隔のも
のの採用が好ましいが、取り扱いの容易性で格子間隔５
０ｍｍが更に好ましい。その他、今までの実施形態でコ
ンクリートがモルタルを含むものであることはもちろん
である。In the above-described embodiment in which the present invention is applied to the wall body 10, the reinforcing member 1 having the function of the reinforcing bar, in other words, having the function of the reinforcing bar 11 is also adopted. By doing so, it goes without saying that the original reinforcing bar 11 can be omitted. Then, in the present embodiment, the reinforcing material for the walls, floor slabs, and the like has a grid spacing of 50 mm, but the grid spacing is not particularly limited. However, the smaller the lattice spacing is, the better in view of restraining cracks. It is preferable to use a reinforcing material having a lattice spacing of about 25 mm to 50 mm as the reinforcing material for the integrally molded product, but it is easy to handle the lattice spacing 5
0 mm is more preferable. In addition, it goes without saying that the concrete includes mortar in the above embodiments.
【００２７】[0027]
【発明の効果】請求項１の発明の防水コンクリート構造
体は、高強度繊維を樹脂により固着して格子状に一体成
形してなる補強部材をコンクリート内に埋設したので、
その補強部材によりコンクリートのひび割れを有効に防
止してそれ自体で優れた防水性能を有するものであり、
したがって従来においては必要であった防水工事を省略
することができ、構造物の施工に際してコスト削減と施
工性改善に大きく寄与することができる。According to the waterproof concrete structure of the invention of claim 1, since the reinforcing member formed by integrally bonding the high-strength fibers with the resin and integrally molding in a lattice shape is embedded in the concrete,
The reinforcing member effectively prevents cracking of concrete and has excellent waterproof performance by itself,
Therefore, it is possible to omit the waterproofing work which is conventionally required, and it is possible to greatly contribute to the cost reduction and the workability improvement in the construction of the structure.
【００２８】請求項２の発明は、鉄筋の少なくとも片面
側に補強部材を添わせて配設したので、鉄筋の近傍にお
けるひび割れを有効を防止できるばかりでなく、補強部
材を鉄筋に結束することでその設置を容易に行うことが
でき施工性に優れる。According to the second aspect of the present invention, since the reinforcing member is disposed along at least one side of the reinforcing bar, it is possible not only to effectively prevent cracks in the vicinity of the reinforcing bar but also to bind the reinforcing member to the reinforcing bar. It can be installed easily and has excellent workability.
【００２９】請求項３の発明は、鉄筋コンクリート造の
躯体における鉄筋の機能を補強部材に持たせることでそ
の補強部材を鉄筋に代えて躯体内に埋設したので、防水
工事を省略できるのみならず鉄筋工事も省略ないし軽減
することができる。According to the third aspect of the present invention, since the reinforcing member has the function of the reinforcing bar in the reinforced concrete frame body and is embedded in the frame body instead of the reinforcing bar, waterproof work can be omitted and the reinforcing bar can be omitted. Construction work can be omitted or reduced.
【００３０】請求項４の発明は、高強度繊維を樹脂によ
り固着して格子状に一体成形してなる補強部材をコンク
リート内に埋設して既設構造物上にコンクリート打設し
たので、構造物に対する防水と保護を兼ねるものとして
施工することができる。According to the fourth aspect of the present invention, since the reinforcing member formed by integrally fixing the high-strength fiber with the resin by resin and embedding it in the lattice shape is embedded in the concrete and concrete-cast on the existing structure, It can be constructed as both waterproof and protective.
【図１】 本発明の防水コンクリート構造体に適用する
補強部材の一例を示す図である。FIG. 1 is a diagram showing an example of a reinforcing member applied to a waterproof concrete structure of the present invention.
【図２】 本発明の防水コンクリート構造体を地中構造
物の壁体に適用した場合の実施形態を示す断面図であ
る。FIG. 2 is a cross-sectional view showing an embodiment when the waterproof concrete structure of the present invention is applied to a wall body of an underground structure.
【図３】 同、他の実施形態を示す断面図である。FIG. 3 is a cross-sectional view showing another embodiment of the same.
【図４】 本発明の防水コンクリート構造体を歩道橋の
床版に適用した場合の実施形態を示す断面図である。FIG. 4 is a cross-sectional view showing an embodiment when the waterproof concrete structure of the present invention is applied to a floor slab of a footbridge.
【図５】 従来の歩道橋の床版の構造の例を示す図であ
る。FIG. 5 is a diagram showing an example of the structure of a floor slab of a conventional pedestrian bridge.
１ 補強部材 １ａ 縦材 １ｂ 横材 １０ 壁体（防水コンクリート構造体） １１ 鉄筋 １２ コンクリート ２０ 床版（防水コンクリート構造体） ２２ コンクリート ２３ 補強部材 1 Reinforcement member 1a Vertical material 1b Horizontal material 10 walls (waterproof concrete structure) 11 rebar 12 concrete 20 Floor slab (waterproof concrete structure) 22 concrete 23 Reinforcement member
フロントページの続き (72)発明者 林 耕四郎 神奈川県相模原市宮下１−２−27 旭硝子 マテックス株式会社内 Ｆターム(参考） 2E001 DA01 DH35 EA01 GA77 HA04 HA33 JA22 JA29 JD02 JD04 JD05 2E164 AA05 BA06 CB11 Continued front page (72) Inventor Koshiro Hayashi 1-227 Miyashita, Sagamihara City, Kanagawa Prefecture Asahi Glass Matex Co., Ltd. F term (reference) 2E001 DA01 DH35 EA01 GA77 HA04 HA33 JA22 JA29 JD02 JD04 JD05 2E164 AA05 BA06 CB11
Claims (4)
状の躯体を構成するコンクリート内に、高強度繊維を樹
脂により固着して格子状に一体成形してなる補強部材を
埋設したことを特徴とする防水コンクリート構造体。1. A reinforcing member formed by integrally molding a high-strength fiber with a resin into a lattice in concrete that constitutes a substantially planographic skeleton body such as a wall or floor slab and roof slab of a structure. A waterproof concrete structure characterized by being buried.
る鉄筋の少なくとも片面側に、その鉄筋に添わせて補強
部材を配設したことを特徴とする請求項１記載の防水コ
ンクリート構造体。2. The waterproof concrete structure according to claim 1, wherein a reinforcing member is provided along at least one side of the reinforcing bar arranged in the reinforced concrete body structure so as to be along with the reinforcing bar.
の機能を補強部材に持たせて、その補強部材を鉄筋に代
えて躯体内に埋設したことを特徴とする請求項１記載の
防水コンクリート構造体。3. The waterproof concrete structure according to claim 1, wherein the reinforcing member has the function of the reinforcing bar in the reinforced concrete frame body, and the reinforcing member is replaced with the reinforcing bar and is embedded in the frame body.
に一体成形してなる補強部材をコンクリート内に埋設し
て既設構造物上にコンクリート打設したことを特徴とす
る防水コンクリート構造体。4. A waterproof concrete structure characterized in that a reinforcing member formed by integrally bonding high-strength fibers with a resin in a lattice shape is embedded in concrete, and concrete is cast on an existing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001299592A JP2003105876A (en) | 2001-09-28 | 2001-09-28 | Structural body of waterproof concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001299592A JP2003105876A (en) | 2001-09-28 | 2001-09-28 | Structural body of waterproof concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003105876A true JP2003105876A (en) | 2003-04-09 |
Family
ID=19120325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001299592A Pending JP2003105876A (en) | 2001-09-28 | 2001-09-28 | Structural body of waterproof concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003105876A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297882A (en) * | 2006-05-08 | 2007-11-15 | Chikanori Hashimoto | Concrete reinforcing net and concrete structure |
| JP2008190296A (en) * | 2007-02-08 | 2008-08-21 | Kajima Corp | Bar arrangement structure of reinforced concrete wall |
| JP2009126731A (en) * | 2007-11-21 | 2009-06-11 | Taiheiyo Material Kk | Cement hardened body and manufacturing method thereof |
| JP2009126730A (en) * | 2007-11-21 | 2009-06-11 | Taiheiyo Material Kk | Crack suppression material for cement hardened body, cement hardened body and manufacturing method of the cement hardened body |
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| JP2009126730A (en) * | 2007-11-21 | 2009-06-11 | Taiheiyo Material Kk | Crack suppression material for cement hardened body, cement hardened body and manufacturing method of the cement hardened body |
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